Interchangeable lens, imaging apparatus, and camera system

Abstract

Provided is a technology enabling an imaging apparatus and an interchangeable lens to appropriately perform initialization processes. An interchangeable lens includes one or more lens-side processors configured to perform initialization of a plurality of lens-side elements. The one or more lens-side processors is further configured to transmit lens-side initialization element information indicating the plurality of lens-side elements to an imaging apparatus. The technology can be applied to, for example, a camera system including a detachable interchangeable lens and an imaging apparatus serving as a camera body side.

The invention claimed is: 
     
       1. An interchangeable lens comprising:
 one or more lens-side processors configured to
 transmit lens-side initialization element information indicating a plurality of lens-side elements to an imaging apparatus, and 
 perform initialization of the plurality of lens-side elements. 
 
 
     
     
       2. The interchangeable lens according to  claim 1 , wherein the one or more lens-side processors is further configured to
 transmit the lens-side initialization element information in response to reception of body-side element information, the body-side element information indicating which initialization completion signals of the plurality of lens-side elements the imaging apparatus is configured to recognize, wherein 
 each of the initialization completion signals corresponds to a different one of the lens-side elements. 
 
     
     
       3. The interchangeable lens according to  claim 2 , wherein the one or more lens-side processors is configured to
 transmit the initialization completion signal for each of the plurality of lens-side elements that the imaging apparatus is configured to recognize based on the body-side element information. 
 
     
     
       4. The interchangeable lens according to  claim 2 , wherein the one or more lens-side processors is configured to
 receive the body-side element information and an initialization start command from the imaging apparatus, and 
 start the initialization of the plurality of lens-side elements in response to the initialization start command. 
 
     
     
       5. The interchangeable lens according to  claim 1 , wherein the one or more lens-side processors is configured to
 transmit the lens-side initialization element information to the imaging apparatus before starting the initialization of the plurality of lens-side elements. 
 
     
     
       6. The interchangeable lens according to  claim 5 , wherein the one or more lens-side processors is configured to
 receive an initialization start command from the imaging apparatus, and 
 start the initialization of the plurality of lens-side elements in response to the initialization start command. 
 
     
     
       7. The interchangeable lens according to  claim 1 , wherein the one or more lens-side processors is configured to
 transmit a separate initialization completion signal for each of the plurality of lens-side elements. 
 
     
     
       8. The interchangeable lens according to  claim 1 , further comprising:
 a lens mount configured to attach to the imaging apparatus. 
 
     
     
       9. The interchangeable lens according to  claim 1 , wherein the plurality of lens-side elements includes at least two of a zoom lens, a camera shake correction lens, a lock of the camera shake correction lens, a diaphragm, or a focus lens. 
     
     
       10. The interchangeable lens according to  claim 1 , wherein
 when the plurality of lens-side elements includes (i) a diaphragm and (ii) an exposure influencing element that influences an exposure adjustment process of the imaging apparatus and is not recognized by the imaging apparatus, the one or more lens-side processors is configured to transmit an initialization completion signal of the diaphragm after the initialization of the diaphragm and the exposure influencing element are completed. 
 
     
     
       11. The interchangeable lens according to  claim 1 , wherein the one or more lens-side processors is configured to
 transmit an initialization completion signal of a first one of the plurality of lens-side elements that is recognized by the imaging apparatus after completion of the initialization of the first one of the plurality of lens-side elements and a second one of the plurality of lens-side elements that is not recognized by the imaging apparatus. 
 
     
     
       12. The interchangeable lens according to  claim 1 , wherein the one or more lens-side processors is configured to
 transmit an initialization completion signal of one of the plurality of lens-side elements in response to completion of the initialization of the one of the plurality of lens-side elements. 
 
     
     
       13. The interchangeable lens according to  claim 1 , wherein the one or more lens-side processors is configured to
 transmit, for each of the plurality of lens-side elements that the imaging apparatus is configured to recognize, an initialization completion signal to the imaging apparatus by asynchronous communication. 
 
     
     
       14. An imaging apparatus comprising:
 one or more body-side processors configured to
 transmit body-side element information to an interchangeable lens, the body-side element information indicating which initialization completion signals of a plurality of lens-side initialization elements the imaging apparatus is configured to recognize, and 
 recognize at least one of the initialization completion signals of the plurality of lens-side initialization elements according to lens-side initialization element information received from the interchangeable lens. 
 
 
     
     
       15. The imaging apparatus according to  claim 14 , wherein the one or more body-side processors is configured to
 transmit the body-side element information before a start of initialization of the plurality of lens-side initialization elements by the interchangeable lens. 
 
     
     
       16. The imaging apparatus according to  claim 14 , wherein the lens-side initialization element information indicates each of the plurality of lens-side elements on which the interchangeable lens performs initialization. 
     
     
       17. The imaging apparatus according to  claim 15 , wherein the one or more body-side processors is configured to
 transmit an initialization start command to the interchangeable lens. 
 
     
     
       18. The imaging apparatus according to  claim 14 , wherein the one or more body-side processors is configured to
 start an exposure adjustment process in response to reception of the initialization completion signal from each of the plurality of lens-side elements that influence the exposure adjustment process and that is recognized by the imaging apparatus. 
 
     
     
       19. The imaging apparatus according to  claim 14 , wherein the one or more body-side processors is configured to
 determine when an initialization of the interchangeable lens is completed based on reception of each of the initialization completion signals of the plurality of lens-side elements that is recognized by the imaging apparatus.